參數(shù)資料
型號: CAT25020YE-T3
廠商: ON SEMICONDUCTOR
元件分類: PROM
英文描述: 256 X 8 SPI BUS SERIAL EEPROM, PDSO8
封裝: GREEN, MO-153, TSSOP-8
文件頁數(shù): 16/17頁
文件大小: 152K
代理商: CAT25020YE-T3
CAT25010, CAT25020, CAT25040
Doc. No. MD-1006 Rev. U
8
2008 SCILLC. All rights reserved
Characteristics subject to change without notice
Write Status Register
The Status Register is written by sending a WRSR
instruction according to timing shown in Figure 6. Only
bits 2 and 3 can be written using the WRSR
command.
Write Protection
When WP
input is low all write operations to the
memory array and Status Register are inhibited. WP
going low while CS
is still low will interrupt a write to
the status register. If the internal write cycle has
already been initiated, WP
going low will have no
effect on any write operation to the Status Register.
The WP
input timing is shown in Figure 7.
Figure 6. WRSR Timing
Note: Dashed Line = mode (1, 1) - - - - - -
Figure 7. WP
Timing
Note: Dashed Line = mode (1, 1) - - - - - -
01
2
3
4
5
6
78
10
911
12
13
14
SCK
SI
MSB
HIGH IMPEDANCE
DATA IN
15
SO
CS
7
6
5
4
3
2
10
00
0
1
OPCODE
CS
SCK
WP
t WPS
t WPH
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